Results 251 to 260 of about 214,379 (306)

A study on schema preservation by crossover

Systems and Computers in Japan, 2002
AbstractThis paper considers the combinatorial optimization problem in which the solution (sample) can be decomposed linearly into multiple schemata. Focusing on an arbitrary kind of schema, the schema preservation mechanism of the crossover in the genetic algorithm is discussed from the viewpoint of the increase or decrease of the number of samples ...
Kimihiro Yamamoto, Shozo Naito
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Crossover studies with survival outcomes

Statistical Methods in Medical Research, 2011
Crossover designs are well known to have major advantages when comparing the effect of two treatments which do not interact. With a right-censored survival endpoint, however, this design is quickly abandoned in favour of the more costly parallel design.
Jozefien, Buyze, Els, Goetghebeur
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The case-crossover study design in pharmacoepidemiology

Statistical Methods in Medical Research, 2009
In the study of the association of transient drug exposures with acute outcomes, the case-crossover design is an efficient alternative to the case-control approach. This design based exclusively on the case series uses within-subject comparisons of drug exposures over time to estimate the rate ratio of the outcome associated with the drug under study ...
Joseph A 'Chris', Delaney, Samy, Suissa
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Interpretation and bias in case-crossover studies

Journal of Clinical Epidemiology, 1997
The case-crossover design is an innovative epidemiologic technique with distinct strengths and limitations. We review the fundamental logic of this self-matching non-randomized design and direct attention to 15 concerns related to the available data, unavailable data, analytic technique, quantitative statistics, and etiologic model.
D A, Redelmeier, R J, Tibshirani
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A comparative study of crossover in differential evolution

Journal of Heuristics, 2010
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Lin, C., Qing, A., Feng, Q.
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A crossover study of triptorelin and leuprorelin acetate

Fertility and Sterility, 2000
To compare the potency, side effects, and duration of action of triptorelin and leuprorelin acetate after i.m. injections.Prospective, double-blind crossover clinical study.A teaching hospital.Fifty-four patients with pelvic endometriosis.Twenty-seven patients had three doses of i.m. triptorelin (3.75 mg) followed by three doses of i.m.
T K, Cheung, K W, Lo, C W, Lam, W, Lau, P K, Lam   +4 more
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A Study on the Utility of Parametric Uniform Crossover for Adaptation of Crossover Operator

2012
The parametric uniform crossover is a general form of the uniform crossover operator by which the swapping probability of each locus could be controlled. The swap probability could control the amount of disruption of high order hyper planes. Several variations of selecto-recombinative genetic algorithms are proposed for controlling the swap probability
Farhad Nadi, Ahamad Tajudin Abdul Khader
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